[INFO] fetching crate rust-hdl-bsp-colorlight-i5 0.45.1...
[INFO] checking rust-hdl-bsp-colorlight-i5-0.45.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate rust-hdl-bsp-colorlight-i5 0.45.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate rust-hdl-bsp-colorlight-i5 0.45.1
[INFO] finished tweaking crates.io crate rust-hdl-bsp-colorlight-i5 0.45.1
[INFO] tweaked toml for crates.io crate rust-hdl-bsp-colorlight-i5 0.45.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust-hdl-bsp-colorlight-i5 0.45.1 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 51 packages to latest compatible versions
[INFO] [stderr]       Adding rust-hdl v0.45.1 (available: v0.46.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d9b79e7ad2a8bd09c1148b4e6eebfb96b253f64fefb6f858cd9fbeff526a529
[INFO] running `Command { std: "docker" "start" "-a" "9d9b79e7ad2a8bd09c1148b4e6eebfb96b253f64fefb6f858cd9fbeff526a529", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d9b79e7ad2a8bd09c1148b4e6eebfb96b253f64fefb6f858cd9fbeff526a529", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d9b79e7ad2a8bd09c1148b4e6eebfb96b253f64fefb6f858cd9fbeff526a529", kill_on_drop: false }`
[INFO] [stdout] 9d9b79e7ad2a8bd09c1148b4e6eebfb96b253f64fefb6f858cd9fbeff526a529
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e84b02bc260698645a5a618da7d61c74574acf1b67cdf81bd7ad599332281dc
[INFO] running `Command { std: "docker" "start" "-a" "8e84b02bc260698645a5a618da7d61c74574acf1b67cdf81bd7ad599332281dc", kill_on_drop: false }`
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling substring v1.4.5
[INFO] [stderr]     Checking crossbeam-queue v0.3.12
[INFO] [stderr]     Checking crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling rust-hdl-macros v0.45.1
[INFO] [stderr]     Checking petgraph v0.6.5
[INFO] [stderr]     Checking array-init v2.1.0
[INFO] [stderr]     Checking svg v0.10.0
[INFO] [stderr]     Checking evalexpr v6.6.0
[INFO] [stderr]     Checking vcd v0.6.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling embed-doc-image v0.1.4
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]     Checking rust-hdl-core v0.45.1
[INFO] [stderr]     Checking rust-hdl-widgets v0.45.1
[INFO] [stderr]     Checking rust-hdl-sim v0.45.1
[INFO] [stderr]     Checking rust-hdl-fpga-support v0.45.1
[INFO] [stderr]     Checking rust-hdl-hls v0.45.1
[INFO] [stderr]     Checking rust-hdl v0.45.1
[INFO] [stderr]     Checking rust-hdl-bsp-colorlight-i5 v0.45.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/synth.rs:43:15
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let dir = PathBuf::from_str(prefix).unwrap();
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-hdl-bsp-colorlight-i5` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/synth.rs:43:15
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let dir = PathBuf::from_str(prefix).unwrap();
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-hdl-bsp-colorlight-i5` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "8e84b02bc260698645a5a618da7d61c74574acf1b67cdf81bd7ad599332281dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e84b02bc260698645a5a618da7d61c74574acf1b67cdf81bd7ad599332281dc", kill_on_drop: false }`
[INFO] [stdout] 8e84b02bc260698645a5a618da7d61c74574acf1b67cdf81bd7ad599332281dc
